# -*- coding: UTF-8 -*-
# @Time    : 2021-8-4 17:02:43
# @Author  : 费海瑞
# @File    : routes.py
# @Software: PyCharm

from flask import render_template, flash, redirect, url_for, request, g
from werkzeug.urls import url_parse
from app.auth import bp
from app.auth.forms import LoginForm, ResetPasswordRequestForm, ResetPasswordForm
from flask_login import current_user, login_user, logout_user
from app.models import User
from app.auth.forms import RegistrationForm
from app import db
from app.auth.email import send_password_reset_email
from flask_babel import _


# 登录路由
@bp.route('/login', methods=['GET', 'POST'])
def login():
    if current_user.is_authenticated:
        return redirect(url_for('main.index'))
    login_form = LoginForm()  # 表单实例化对象
    if login_form.validate_on_submit():
        user = User.query.filter_by(username=login_form.username.data).first()
        if user is None or not user.check_password(login_form.password.data):
            flash(_('Invalid username or password'))
            return redirect(url_for('auth.login'))
        login_user(user, remember=login_form.remember_me.data)
        # 重定向到next页面
        next_page = request.args.get('next')
        if not next_page or url_parse(next_page).netloc != '':
            next_page = url_for('main.index')
        return redirect(next_page)
        # msg = 'Login requested for user {},remember_me={}'.format(login_form.username.data, login_form.remember_me.data)
        # flash(msg)
        # print(msg)
        # return redirect(url_for('index'))
    return render_template('auth/login.html', title='Sign In', form=login_form)


# 退出登录路由
@bp.route('/logout')
def logout():
    logout_user()
    return redirect(url_for('main.index'))


# 注册路由
@bp.route('/register', methods=['GET', 'POST'])
def register():
    if current_user.is_authenticated:
        return redirect(url_for('main.index'))
    form = RegistrationForm()
    if form.validate_on_submit():
        user = User(username=form.username.data, email=form.email.data)
        user.set_password(form.password.data)
        db.session.add(user)
        db.session.commit()
        flash(_('Congratulations, you are now a registered user!'))
        return redirect(url_for('auth.login'))
    return render_template('auth/register.html', title=_('Register'),
                           form=form)


# 重置密码路由
@bp.route('/reset_password_request', methods=['GET', 'POST'])
def reset_password_request():
    if current_user.is_authenticated:
        return redirect(url_for('main.index'))
    form = ResetPasswordRequestForm()
    if form.validate_on_submit():
        user = User.query.filter_by(email=form.email.data).first()
        if user:
            send_password_reset_email(user)
        flash(_('Check your email for the instructions to reset your password'))
        return redirect(url_for('auth.login'))
    return render_template('auth/reset_password_request.html', title='Reset Password', form=form)


# 重置用户密码路由
@bp.route('/reset_password/<token>', methods=['GET', 'POST'])
def reset_password(token):
    if current_user.is_authenticated:
        return render_template(url_for('main.index'))
    user = User.verify_reset_password_token(token)
    if not user:
        return redirect(url_for('main.index'))
    form = ResetPasswordForm()
    if form.validate_on_submit():
        user.set_password(form.password.data)
        db.session.commit()
        flash(_('Your password has been reset.'))
        return redirect(url_for('auth.login'))
    return render_template('auth/reset_password.html', form=form)
